Combo photo shows a rattan bridge over the Yarlung Zangbo River in 1980s (L, photo taken by Gu Shoukang) and Mainling section of the highway linking Pad Township in the city of Nyingchi and Medog County, southwest China's Tibet Autonomous Region, on Nov. 5, 2020 (R, photo taken by Dong Zhixiong). On May 23, 1951, the Agreement of the Central People's Government and the Local Government of Tibet on Measures for the Peaceful Liberation of Tibet (17-Article Agreement) was signed, officially proclaiming the peaceful liberation of Tibet. The year 2021 marks the 70th anniversary of the historic event. (Xinhua)
